diff --git a/sys/dev/fdt/fdt_slicer.c b/sys/dev/fdt/fdt_slicer.c
index ebbfa45e2ece..9442aebdb6e3 100644
--- a/sys/dev/fdt/fdt_slicer.c
+++ b/sys/dev/fdt/fdt_slicer.c
@@ -182,4 +182,5 @@ static moduledata_t fdt_slicer_mod = {
 };
 
 DECLARE_MODULE(fdt_slicer, fdt_slicer_mod, SI_SUB_DRIVERS, SI_ORDER_SECOND);
+MODULE_DEPEND(fdt_slicer, g_flashmap, 0, 0, 0);
 MODULE_VERSION(fdt_slicer, 1);